CBO DAC Cable QSFP-DD BlueLAN model BL292901X1M26 — direct-attach copper, 1.26 m

CBO DAC Cable QSFP-DD BlueLAN model BL292901X1M26 is a direct-attach copper (DAC) cable designed for short-reach, high-speed interconnects between devices equipped with QSFP-DD ports. With a fixed length of 1.26 m and QSFP-DD connectors on both ends, this BlueOptics cable provides a low-latency, power-efficient physical link for switches, routers and servers in data center and enterprise rack environments. The copper assembly removes the need for optical transceivers while delivering reliable connectivity for applications that require dense, high-bandwidth links.

Advantages

The DAC construction delivers low insertion loss and minimal latency compared with optical links, and the passive copper medium reduces power consumption by eliminating transceiver modules. The 1.26 m length is adequate for within-rack and short rack-to-rack connections, simplifying cabling and improving port density. QSFP-DD compatibility ensures support for high-speed interfaces and broad interoperability with devices that accept QSFP-DD direct-attach copper cables.

Suitable for

• Within-rack high-speed connections between servers and switches
• Short rack-to-rack links in data center topologies
• Reducing power and cost by avoiding optical transceivers
• Environments requiring low-latency, high-bandwidth physical links

Key specifications

• Cable type: direct-attach copper (DAC)
• Connector type: QSFP-DD to QSFP-DD
• Length: 1.26 m (fixed)
• Intended use: short-reach, high-speed interconnects
• Typical applications: data center within-rack and short rack-to-rack links
• Physical medium: copper twinax assembly

How to use

Install the QSFP-DD connectors into the compatible QSFP-DD ports on your networking equipment until they click into place, ensuring proper orientation and a secure fit. No additional modules or optical transceivers are required; the cable provides a direct copper connection. Verify that both connected devices support the same data rate and QSFP-DD DAC operation. For removal, depress the latch on each connector and pull straight out to avoid bending the cable near the connector ends.

Recommendations

Route the cable to avoid tight bends and excessive mechanical stress; maintain the manufacturer’s minimum bend radius. Use the 1.26 m length for within-rack or short rack-to-rack links where QSFP-DD ports are present. Confirm device compatibility and firmware support for DAC connections to ensure full link speed and functionality.